Drying device for tubular fabrics



Allg- 3l 1926.-

' E. WENZEL DRYING DEVICE Fon TUBULAR FABRICS Filled June e, 1925 2 Sheets-Sheet 1 Wizz/766.566 @mi Patented A-ug.' -31, 1926.

UNITED STATES PATE-Nr oFFicE.

EMIL WENZEL, 0F AUE, GERMANY, ASSIGNOR TO THE FIRM: ERNST GESSNEB,

y AKTIENGESELLSCHAFT, 0F AIUE, ERZGEBIRGE, GERMANY.

DBYING DEVICE FOR TUBULAB FABRICS.

Application led June 6, 1925, Serial No. 85,406, and in Germany June 20, i924.

This invention relates to a dryin device for tubular fabrics, such as are pro uced on circular knitting frames from artificial silk, cotton or woolen yarns, and its object is to facilitate the dryin of such tubular fabrics after dyeing or was ing. The length of the pieces are usually about forty metres.

It has been hitherto customary in drying such tubular lengths to pass the tubular fabric in a stretched state over a hollow frame, so as to embrace the frame, whilst drying air, preferably. suitablyheated, is introduced to the space enclosed by the tubular fabric, `.which is dried by the passage of the air from the interior ofthe tube through the stretched walls of fabric. The tubular fabric, after treatment in the dyeing vats o1" the like is inserted in tubs and is threaded over the Ysupply pipe for the drying fluid. .The stretching frame is then placed over the mouth of the said supply pipe and the fabric tube passed over the frame so as to embraceit. This is alon and tedious operation and by means of t e present invention it is ossible to dispense with the operation o lthreading the tubular fabric over the supply pipe for the drying fluid.

The object of the resent invention is to provide a form of rying device for such tubular fabrics, so arranged that the process is less onerous and more nearly contlnuous.

According to this invention the wet tubular fabric is threaded concentrically into a removable annular tub or container as it is taken from. the "dyeing vat or the like and this removable container is located centrally over a supply pipe for drying fluid and under the stretching frame whilst thelatter is being supported by lateral supports which are then removed` and theirplace taken by central supports for' the stretching frame, where upon the tubular fabric is threaded over 'the frame to embrace the same -and be drawn thereover by means of .draw rolls 'in the known manner. y

The invent-ion is illustrated by way of example in the accompanying drawings, in which- Figurev 1 is a sectional elevation of a dryingd device in accordance with this invention, an

Figure 2 is an elevation at right angles to that shown in Figure l, part of onev of the standards being removed to reveal the lower mechanism of the device.

In carrying the invention into effect, the.

apparatus comprises two frame standards A which act as supports for the feed rolls o and the lateral support claws la, which in the form shown are carried by spindles h1, which may -be moved radially inwards, as indicated by the small arrows.

The drying frame comprises a number of rings a, suitably supported'from a central spindle b, which is fixed in the hub of a spider a2, which carries the bottom ring a of the series. From the bottom upwards the rings a are conveniently of increasing diameter, but the top frame a4 is preferably adjustable in the axial direction of the feed rolls o, but, as can be seen in Figure 2, is narrower than the other frame rings. The adjustment of thetop frame piece a* is conveniently effected by supporting it on linksl a1, which are adjustable as at a". The cir? cuinferential supporting claws h are conveniently located opposite the widest frame ring, which, as shown, is conveniently double, so as to prevent binding at the turn from. the larger t'o the smaller size of the frame bars a4. A

The bottom spider a2 is conveniently provided with centering dogs as, which nest inside the central support. The central supporting member c is associated with the annular tub lc, containing the .wet length of tubular fabric. This association maybe of any convenient form, but in the form illustrated the cent-ral support c isa'cylindrical structure separate from the tub, and ided in an opening of the frame d, Whic' su ports the tub. The cylinder c is slidablle in this central opening,and hasconveniently diametrically opposite tooth racks 'f, -arranged longitudinally on its circumference.. These 'racks engage pinions e, which are oprss` erated from a hand-wheel e1 and worin shaft f e. By this mechanism the central su port o may be raisedor lowered asdesir The supply pipe for the .drying air 'ope'ns into the .interior ofv the cylindrical central support c ,by which "it is conducted to the space enclosed` by the tubular fabric stretched on the fraine bars a.. l

The annular tubc is preferably suitably supported from the frame 'QZ and may, as

shown, ybe rotatable on this support by mounting the rollers m on the support and p on which the tub rests. The rollers-m may be grooved and a ring or roll m1 on the length of tubular fabric has passed fromtheannular tub 7c over the frame, the lateral supporting claws k are moved to support the frame in its central position, and the -central support c is lowered by the hand wheel el?y so as to enable the annular tub 7c to be removed sidewise, and the full tub inserted. .Thecentral support c is then again raised and the lateral supports h moved out of operation, whereupon the new v length isthreaded over the frame, and the process resumed.

I claim 1. A drying and stretching device for fabric in tubular form having in combination, a stretching frame over which the fabric is passed so as to4 embrace the frame, a removable annular container linto which the fabric tube is concentrically threaded, central and lateral supporting means for said f 1,597,7oa

stretching frame, means for rendering one or other of said supporting means operative as desired, a central supply pipe for drying fluid to the interior of said stretched tubular fabric and means for drawing the fabric tube over the stretching frame.-

2. In combination with draw rolls .fand a stretching frame for tubular fabrics, an annular container for the tubular fabric 1ocated at the opposite end of said frame from the draw rolls and a hot air supp-ly pipe opening centrally within said annular container, said annular container being removf able laterally in respect to said fra-me and supply pipe. A 3. A drying device for fabric in tubular form, having a loose and removable annular tub for the Wet tubular fabric, a stretching frame located centrallyU over said tub, and composed of ring members which impart increasing stretch to the tubular fabric passed thereover, and an upper adjustable frame member, feed rolls located over said frame and receiving the fabric passed thereover,

a. central support for said frame locatedy below the same and co-axi'ally with the annular removable tub, said support being 

